Btrfs: early reference counting

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index b1a8149bbc84..0e1c31e682fb 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -260,6 +260,8 @@ void tree_block_release(struct ctree_root *root, struct tree_buffer *buf)
         if (buf->count < 0)
                 BUG();
         if (buf->count == 0) {
+                BUG_ON(!list_empty(&buf->cache));
+                BUG_ON(!list_empty(&buf->dirty));
                 if (!radix_tree_lookup(&root->cache_radix, buf->blocknr))
                         BUG();
                 radix_tree_delete(&root->cache_radix, buf->blocknr);